<template>
    <div>
        <h1>{{id?`编辑`:`新建`}}分类</h1>
        <el-form label-width='120px'>
            <el-form-item label="上级分类"> 
                <el-select v-model="model.parent" placeholder="请选择">
                  <el-option v-for="item in parent" :key='item._id' :label='item.name' :value='item._id'></el-option>
                </el-select>
            </el-form-item> 
            <el-form-item label="名称"> 
                <el-input v-model="model.name"></el-input>
            </el-form-item>
            <el-form-item>
                <el-button type='primary' @click="save()" native-type='submit'>
                    保存
                </el-button>
            </el-form-item>
        </el-form>
    </div>
</template>

<script>
export default {
    props:{
        id:{}
    },
    data(){
        return{
            model:{},
            parent:[]
        }
    },
    methods:{
        async save(){
            let res
            if(this.id){
                res = await this.$http.put(`rest/Category/${this.id}`,this.model)
            }else{
                res = await this.$http.post('rest/Category',this.model)
            }
            this.$router.push('/categories/list')
            this.$message({
                type:'success',
                message:'保存成功'
            })
        },
        async fetch(){
            const res = await this.$http.get('rest/Category/'+this.id)
            this.model = res.data
        },
        async fetchParent(){
            const res = await this.$http.get('rest/Category')
            this.parent = res.data
        }
    },
    created(){
        this.fetchParent()
        if(this.id){
            this.fetch()
        }
    }
}
</script>